Datasheet

Datasheet - Apr. 2013 - ams163.5 TSL2591 – 15
The Interrupt persistence filter sets the number of consecutive
out-of-range ALS cycles necessary to generate an interrupt.
Out-of-range is determined by comparing C0DATA (0x14 and
0x15) to the interrupt threshold registers (0x04 - 0x07). Note
that the no-persist ALS interrupt is not affected by the interrupt
persistence filter. Upon power up, the interrupt persistence
filter register resets to 0x00.
76543210
Reserved APERS
Field Bits Description
Reserved 7:4 Reserved. Write as 0.
APERS 3:0
ALS interrupt persistence filter
FIELD VALUE PERSISTENCE
0000 Every ALS cycle generates an interrupt
0001 Any value outside of threshold range
0010 2 consecutive values out of range
0011 3 consecutive values out of range
0100 5 consecutive values out of range
0101 10 consecutive values out of range
0110 15 consecutive values out of range
0111 20 consecutive values out of range
1000 25 consecutive values out of range
1001 30 consecutive values out of range
1010 35 consecutive values out of range
1011 40 consecutive values out of range
1100 45 consecutive values out of range
1101 50 consecutive values out of range
1110 55 consecutive values out of range
1111 60 consecutive values out of range
PERSIST Register (0x0C)